re: Why do people call them "street tacos"?

So on the streets of Mexico they sell tacos and they have a certain style about them. Hence, when they are sold in let’s say a Taqueria in California they will be called Street Tacos so people will understand the style of tacos they can expect.

What can you expect? A small sized corn tortilla, often doubled up, topped with meat, onion, cilantro, and add a sauce. It’s easy to handle and eat while standing or walking in or along the street.

Kind of like a place adverting they sell Chicago style hot dogs.

Some places do call them mini tacos, but in your world that would bother you as well.